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FPGA evaluation board with > 32K slices

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grubby23

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Hi

We are looking for an FPGA evaluation board
to get a simple RISC processor running. It
should have at least 32K slices and I was thinking
of buying a Xilinx Virtex board. As synthesis tool
we would like to use XST 9.2. Anyone has got a hint
where I could get here a good and cheap board ;). We
are using it at university so also some deals for students
would come into question!

many thanks,
philipp
 



echo47 said:
Remember that "slice" means different things in different FPGAs. For example, a Virtex-4 slice has two flops and two 4-input LUTs, while a Virtex-5 slice has four flops and four 6-input LUTs.

32K slices seems very big for a "simple" RISC processor. The Xilinx MicroBlaze is only a few percent of that:
https://www.xilinx.com/products/design_resources/proc_central/microblaze_per.htm
Click to expand...

Microblaze and Nios-II are 'special-cases', as each are architected around their respective vendor's FPGA-feature set. Hence, both Microblaze and Nios-II are exceptionally compact (for their relative capabilities.) A 'general-purpose' RISC-design isn't come close to touching the frequency/area characteristics.

I do agree 33,000 slices is quite a large amount!
 

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